1.10 Art Deco Diamond Engagement Ring in Platinum1. 10 Art Deco Diamond Engagement Ring in Platinum. This Art Deco engagement ring features 1. 80 carats of diamonds finished in platinum. The center diamond is a 1. 10 carat emerald cut gem. The primary diamond has a faint warm hue and is bezel set. Two (2) . 14 carat accent diamonds flank the center stone. An additional two (2) . 21 carat baguette cut diamonds are mounted on the shoulders of the band. The variety of diamond cuts gives this engagement